Content .. 2068 2069 2070 2071 ..

Dodge Ram Truck 1500-2500-3500. Manual - part 2070

can cause noises (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - DESCRIPTION - REFRIGER-
ANT LINES)

5. If the noise is from opening and closing of the high pressure relief valve, recover, evacuate and recharge the

refrigerant system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PROCEDURE -
REFRIGERANT SYSTEM RECOVERY), (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STAN-
DARD PROCEDURE - REFRIGERANT SYSTEM EVACUATE) and (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - STANDARD PROCEDURE - REFRIGERANT SYSTEM CHARGE). If the high pressure relief
valve still does not seat properly, replace the A/C compressor (Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING/COMPRESSOR-A/C - REMOVAL).

6. If the noise is from liquid refrigerant slugging in the A/C suction line, replace the A/C accumulator (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING/ACCUMULATOR-A/C - REMOVAL) and check the refrigerant oil
level and the refrigerant system charge (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIG-
ERANT OIL - STANDARD PROCEDURE - REFRIGERANT OIL LEVEL) (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING- STANDARD PROCEDURE - REFRIGERANT SYSTEM CHARGE).

7. If a slugging condition still exists after replacing the A/C accumulator, then replace the A/C compressor (Refer to

24 - HEATING & AIR CONDITIONING/PLUMBING/COMPRESSOR-A/C - REMOVAL) and repeat Step 1.

REMOVAL

3.7L/4.7L ENGINES

WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS). Failure to follow the warnings and cautions could result
in possible personal injury or death.

NOTE: The A/C compressor may be removed and repositioned without disconnecting the refrigerant lines or
discharging the refrigerant system. Discharging is not necessary if servicing the compressor clutch, clutch
coil, engine, engine cylinder head or the generator.

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

STANDARD

PROCEDURE

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. Remove the serpentine drive belt (Refer to 7 -

COOLING/ACCESSORY

DRIVE/BELTS-DRIVE

REMOVAL).

4. Remove the nuts (4) that secure the A/C suction

line (5) and the A/C discharge line (9) to the A/C
compressor (6).

5. Disconnect the refrigerant lines from the A/C com-

pressor and remove and discard the seals.

6. Install plugs in, or tape over all of the opened

refrigerant line fittings and the compressor ports.

24 - 280

PLUMBING

DR/DH

7. Loosen the bolt (5) that secures the bracket (7) to

the accessory mounting bracket (4).

8. Remove the bolts (1, 6 and 3) that secure the A/C

compressor (2) to the accessory mounting bracket.

9. Remove the A/C compressor from the engine

compartment.

5.7L ENGINE

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

STANDARD

PROCEDURE

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. Remove the serpentine drive belt (Refer to 7 -

COOLING/ACCESSORY

DRIVE/BELTS-DRIVE

REMOVAL).

4. Disconnect the wire harness connector from the

clutch coil connector of the A/C compressor (6).

5. Remove the nuts (4 and 7) that secure the A/C dis-

charge line (1) and the A/C suction line (5) to the
A/C compressor.

6. Disconnect the refrigerant lines from the A/C com-

pressor and remove and discard the seals.

7. Install plugs in, or tape over all of the opened

refrigerant line fittings and the compressor ports.

DR/DH

PLUMBING

24 - 281

8. Remove the bolts and nuts that secure the gener-

ator and A/C compressor support bracket to the
front of the engine.

9. Remove the bolts (1 and 3) that secure the A/C

compressor (2) to the mounting bracket (4).

10. Remove the A/C compressor from the engine

compartment.

5.9L DIESEL ENGINE

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

STANDARD

PROCEDURE

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. Remove the serpentine drive belt (Refer to 7 -

COOLING/ACCESSORY

DRIVE/BELTS-DRIVE

REMOVAL).

4. Disconnect the wire harness connector from the

clutch coil connector of the A/C compressor (6).

5. Remove the bolt (7) that secure the A/C suction

and discharge line assembly (8) to the A/C com-
pressor.

6. Disconnect the refrigerant line assembly from the

A/C compressor and remove and discard the seals.

7. Install plugs in, or tape over all of the opened

refrigerant line fittings and the compressor ports.

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PLUMBING

DR/DH

8. Remove the bolts (4) that secure the A/C compres-

sor (3) to the mounting bracket (2) located on the
right side of the cylinder block (1).

9. Remove the A/C compressor from the engine

compartment.

8.3L ENGINE

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

STANDARD

PROCEDURE

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. Remove the serpentine drive belt (Refer to 7 -

COOLING/ACCESSORY

DRIVE/BELTS-DRIVE

REMOVAL).

4. Disconnect the wire harness connector from the

A/C compressor clutch coil connector (4).

5. Remove the bolts (5) that secure the A/C suction

line (1) and the A/C discharge line (3) to the A/C
compressor (2).

6. Disconnect the refrigerant lines from the A/C com-

pressor and remove and discard the seals.

7. Install plugs in, or tape over all of the opened

refrigerant line fittings and the compressor ports.

DR/DH

PLUMBING

24 - 283

Content .. 2068 2069 2070 2071 ..